Part A
AM26LV32CDR
德州儀器
- Lifecycle
- Active
- Stock
- 3036 件
- Package
- SOIC-16
- Series
- 介面-驅動器、接收器、收發器
Replacement verdict
Compatible functional replacement candidate
The AM26LV32CDR and AM26LS32ACDE4 are both quad differential line receivers in SOIC-16 packages with matching pinouts and 3.3 V/5 V-compatible logic interfaces, making them strong functional replacement candidates. The AM26LV32CDR offers a wider operating temperature range and lower supply voltage operation, while the AM26LS32ACDE4 provides higher differential input voltage tolerance. Designers should validate input common-mode range and supply voltage requirements against the target application before substitution.
Function and Channel Count
High match
Package and Pinout
High match
Supply Voltage Range
Validation required
Input Common-Mode Range
Validation required
Parts at a glance
Part B
AM26LS32ACDE4
德州儀器
- Lifecycle
- Active
- Stock
- 9006 件
- Package
- SOIC-16
- Series
- 介面-驅動器、接收器、收發器
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AM26LV32CDR | AM26LS32ACDE4 | Why it matters |
|---|---|---|---|
| Supply Voltage (Vcc) | 3.0 V to 3.6 V | 4.75 V to 5.25 V | The two devices operate on different supply rails (3.3 V vs 5 V), so they are not drop-in replacements without adjusting the power supply. |
| Receiver Type / Standard | RS-422 / TIA/EIA-422-B (low-voltage) | RS-422 / RS-423 / TIA/EIA-422-B and V.11 | The AM26LS32ACDE4 supports both RS-422 and RS-423 signaling, while the AM26LV32CDR is specified for RS-422 only, affecting protocol compatibility. |
| Number of Drivers/Receivers | 0 drivers / 4 receivers | 0 drivers / 4 receivers | Both are quad receivers, so channel count is equivalent for bus receive applications. |
| Input Common-Mode Voltage Range | -0.3 V to 5.5 V (with Vcc = 3.3 V) | -7 V to +7 V | The wider common-mode range of the AM26LS32ACDE4 provides greater noise margin and ground-potential tolerance in harsh industrial environments. |
| Receiver Output Voltage Levels | TTL-compatible (3.3 V logic) | TTL-compatible (5 V logic) | Output logic levels must match the downstream logic family; 3.3 V vs 5 V outputs affect direct interfacing with microcontrollers and FPGAs. |
| Maximum Data Rate | Up to 32 Mbps (typical) | Up to 10 Mbps (typical) | The AM26LV32CDR supports higher signaling rates, which matters for high-speed serial links where bandwidth is critical. |
| Propagation Delay | ~10 ns (typical) | ~20 ns (typical) | Lower propagation delay improves timing margin in synchronous and high-speed data transmission systems. |
| Package / Pin Count | SOIC-16 (16 pins) | SOIC-16 (16 pins) | Identical package and pin count allow the same PCB footprint, though electrical differences still prevent direct substitution. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Equivalent temperature ratings mean both suit the same industrial ambient conditions. |
| Fail-Safe / Input Hysteresis | ~50 mV hysteresis (typical) | ~50 mV hysteresis (typical) | Comparable input hysteresis provides similar noise immunity on floating or terminated bus lines. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AM26LV32CDR | AM26LS32ACDE4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Type | Receiver | Receiver |
| Protocol | RS422, RS485 | RS422, RS423 |
| Number of Drivers/Receivers | 0/4 | 0/4 |
| Receiver Hysteresis | 50 mV | 50 mV |
| Voltage - Supply | 3V ~ 3.6V | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AM26LV32CDR and the AM26LS32ACDE4?
The AM26LV32CDR is a low-voltage quad differential line receiver optimized for 3.3 V operation, while the AM26LS32ACDE4 is a 5 V quad differential line receiver. The AM26LV32CDR supports a supply range of 3.0 V to 3.6 V, whereas the AM26LS32ACDE4 operates from a 5 V nominal supply. Both are quad receivers in SOIC-16 packages, but they differ in supply voltage, input thresholds, and output drive characteristics.
Are the AM26LV32CDR and AM26LS32ACDE4 pin-compatible?
Both devices are offered in a 16-pin SOIC (D) package with the same quad receiver pinout (4 receivers, each with A, B inputs and Y output, plus enable pins). However, pin compatibility does not guarantee electrical interchangeability; the supply voltage and input threshold differences must be validated against the target design before substitution.
What supply voltage does each device require?
The AM26LV32CDR operates from a 3.0 V to 3.6 V supply (3.3 V nominal), per its datasheet. The AM26LS32ACDE4 operates from a 5 V nominal supply (4.75 V to 5.25 V). The two devices are not interchangeable across these supply domains without level shifting or supply redesign.
What are the input sensitivity specifications for these receivers?
The AM26LV32CDR features a differential input sensitivity of ±200 mV over its common-mode range, consistent with RS-422/RS-485 receiver requirements. The AM26LS32ACDE4 also specifies ±200 mV differential input sensitivity. Both meet the ±200 mV threshold typical of TIA/EIA-422 receivers, but the common-mode ranges differ due to their respective supply voltages.
Can the AM26LV32CDR be used as a drop-in replacement for the AM26LS32ACDE4 in an existing 5 V design?
No. The AM26LV32CDR is rated for a maximum supply of 3.6 V and cannot be operated directly from a 5 V rail. A 5 V design using the AM26LS32ACDE4 would require a 3.3 V supply and validation of input/output levels before the AM26LV32CDR could be considered.
What are the operating temperature ranges for these devices?
The AM26LV32CDR is specified over the commercial temperature range of 0°C to 70°C (C suffix). The AM26LS32ACDE4 is specified over the industrial temperature range of -40°C to 85°C (I suffix per the E4 ordering code). Designs requiring extended temperature operation should account for this difference.
What output types do these receivers provide?
Both the AM26LV32CDR and AM26LS32ACDE4 provide 3-state differential outputs with active-high and active-low enable controls, allowing multiple receivers to share a common bus. The output drive current and voltage swing differ because of the 3.3 V versus 5 V supply, so downstream logic thresholds must be checked.
Which device is better suited for low-power 3.3 V systems?
The AM26LV32CDR is designed for 3.3 V systems and is the appropriate choice when the logic supply is 3.0 V to 3.6 V, offering lower supply voltage operation and reduced power compared with a 5 V receiver. The AM26LS32ACDE4 should be selected only for 5 V systems.